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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-02-09 18:09:24 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-05-02 17:29:23 +0200 |
| commit | 62e4003780cad60ac1371fef892da08c27069964 (patch) | |
| tree | bb5eed9e10c01aba3dd80ee4cdeae5b26ded738d /libavcodec | |
| parent | 2d465a401dd790e2ca126ecb9cbda43f898a492f (diff) | |
libavcodec/wmalosslessdec: prevent sum of positive numbers from becoming negative
Fixes: left shift of negative value -8321365
Fixes: 20506/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-4798062906310656
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/wmalosslessdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c index 8885487980..c6c13fb417 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -164,7 +164,7 @@ typedef struct WmallDecodeCtx { int transient_pos[WMALL_MAX_CHANNELS]; int seekable_tile; - int ave_sum[WMALL_MAX_CHANNELS]; + unsigned ave_sum[WMALL_MAX_CHANNELS]; int channel_residues[WMALL_MAX_CHANNELS][WMALL_BLOCK_MAX_SIZE]; |